CNC router build

I just posted the first picture of the cnc rouoter I am starting to
build. It is designed primarily for routing model boat hulls and hull
patterns. I'm sure it will be used for a myriad of other model parts.

It is based on a piece of 1/2" X 24" X 48.5" tooling plate. Linear
bearings will be used with ball screws/nuts from McMaster Carr.

The X axis will be powered by two steppers that will be linked together
in Mach 3. Y and Z axis will be typical. I will be using 269oz
steppers I got from Xylotex and a cheap controller from eBay.

I have a router and a Dremel tool that could be used but I am
considering some alternative hopeing to keep noise level down. Noise
is a concern I'm not sure how to deal with. I'm considering making a
box of some sort to house the router in and line it with some sort of
noise absorbing material. Any cost effective suggestions on how to
deal with noise supression would be welcome!

Jack